Display screen or a portion thereof with graphical user interface



FIG. 1 is a front view of an image of a graphical user interface for aportion of a display screen showing my new design.

The broken line showing of a portion of a display screen in FIG. 1 formsno part of the claimed design. The broken line showing of text andportions of the graphical user interface in FIG. 1 representsenvironmental subject matter and forms no part of the claimed design.

CLAIM The ornamental design for a graphical user interface for a portionof a display screen, as shown and described.